Selecting the correct duct fittings is essential for precise airflow calculations, pressure loss estimates, and efficient HVAC performance. The ASHRAE Duct Fitting Database Software provides a comprehensive, digital catalogue of resistance coefficients (K‑values) for hundreds of standard and custom fittings. By integrating this database into your duct‑sizing workflow, you can automate pressure‑drop calculations, enhance accuracy, and comply with ASHRAE Handbook guidelines.
Why Use the ASHRAE Duct Fitting Database?
- Complete K‑Value Library: Access published resistance data for elbows, transitions, tees, offsets, and more—eliminating manual lookup in tables.
- Automated Pressure Loss Calculations: Input your duct velocity and fitting type to instantly compute pressure drop (∆P = K·½ρV²).
- Custom Fitting Support: Add or modify K‑values for project‑specific ductwork configurations.
- Unit Flexibility: Work in SI or Imperial units, with built‑in conversions.
Key Features
- Extensive Fitting Catalogue
• Over 200 entries covering common shapes and configurations. - Dynamic Data Export
• Generate CSV or XML outputs for use in Excel, Revit, or other analysis tools. - Graphical Interface
• Browse fittings visually, view schematic representations, and select multiple items for batch calculations. - ASHRAE Compliance
• Data sourced directly from the ASHRAE Handbook – Fundamentals, ensuring industry‑standard accuracy. - Lightweight Installation
• Installs as a standalone desktop utility or plug‑in for popular duct‑sizing software.
How It Works
- Download & Install: Obtain the installer from ASHRAE’s official repository.
- Launch the Database Tool: Browse or search by fitting type, size, and configuration.
- Select Your Fitting: Enter duct size and airflow velocity.
- View K‑Value & Pressure Drop: The software calculates ∆P instantly and displays results in your chosen units.
- Export or Integrate: Copy K‑values into your duct‑sizing worksheet, or export a file for BIM and CFD tools.
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